Optimized Spectral geoid determination

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dc.contributor.advisorSideris, Michael G.
dc.contributor.authorLi, Ye Cai
dc.date.accessioned2005-08-05T16:28:44Z
dc.date.available2005-08-05T16:28:44Z
dc.date.issued1993
dc.descriptionBibliography: p. 148-154.en
dc.description.abstractThis thesis optimizes spectral geoid determination techniques. Emphasis is given to the contributions of the regional gravity observations, the global harmonic coefficients, and the topographic heights. Minimization of the geoid errors is the main objective, while the improvement of the computational efficiency is another ambition. Geoid undulations computed by Stokes' integral with different kernel functions are analyzed and compared with results from OPS/levelling in order to identify the kernel that gives the best accuracy. The effect of different topographic representations is investigated and new terrain correction formulas with a mass prism terrain model are developed for the computation of high-resolution geoids in the mountains. Isostatic gravity reductions with 30 density models are developed. The contribution of the geopotential mode is improved by (a) tailoring with the regional gravity anomalies and (b) considering the enors of the coefficients. Spectral techniques for prediction and error filtering of the gravity anomalies are implemented. New methods for improving the computational efficiency are introduced. Both the theoretical analyses and the numerical investigations demonstrate that the accuracy of gravimetric geoid undulations can be considerably improved with these optimizations.
dc.format.extentxviii, 154 leaves : ill. ; 30 cm.en
dc.identifier.citationLi, Y. C. (1993). Optimized Spectral geoid determination (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/10845en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/10845
dc.identifier.isbn0315885637en
dc.identifier.lccQB 334 L5 1993en
dc.identifier.urihttp://hdl.handle.net/1880/30699
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject.lccQB 334 L5 1993en
dc.subject.lcshGravity - Measurement
dc.subject.lcshGeodesy
dc.subject.lcshGravity anomalies
dc.titleOptimized Spectral geoid determination
dc.typemaster thesis
thesis.degree.disciplineGeomatics Engineering
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameMaster of Science (MSc)
ucalgary.item.requestcopytrue
ucalgary.thesis.accessionTheses Collection 58.002:Box 881 520535182
ucalgary.thesis.notesoffsiteen
ucalgary.thesis.uarcreleaseyen
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